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Editorial Team
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Asked: 2026-05-23T03:24:47+00:00

I have a mobile app using JQuery Mobile. Because of issues with blackberry I

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I have a mobile app using JQuery Mobile. Because of issues with blackberry I need to choose which JS files to load when the page is loaded. I do this on the html page like so:

<html>
<head>
<!-- Code -->
<script type = "text/javascript" >
//Check if phone is a blackberry
if (navigator.userAgent == 'BlackBerry') {
    //Load blackberry workaround
    var ourJSFile = document.createElement('script');
    ourJSFile.setAttribute("type", "text/javascript");
    ourJSFile.setAttribute("src", "DefaultBBWorkaround.js");
    //Load Newest JQuery
    var fileref = document.createElement('script');
    fileref.setAttribute("type", "text/javascript");
    fileref.setAttribute("src", "http://code.jquery.com/mobile/latest/jquery.mobile.min.js");
} else {
alert("Started");
    //Load default
    var ourJSFile = document.createElement('script');
    ourJSFile.setAttribute("type", "text/javascript");
    ourJSFile.setAttribute("src", "Default.js");
    //Load last stable version of JQuery
    var fileref = document.createElement('script');
    fileref.setAttribute("type", "text/javascript");
    fileref.setAttribute("src", "jquery.mobile-1.0a4.1.js");
    alert("Done");
}
</script>
</head>
<body>
<!-- Code -->
</body>
</html>

I hit both alert() calls, but the file is never loaded (I checked in firebug as well).
Is there something I am doing wrong here?

Also I want to do this for the css as well. I know to do so I would have to do this:

loadcss = document.createElement('link');
loadcss.setAttribute("rel", "stylesheet");
loadcss.setAttribute("type", "text/css");
loadcss.setAttribute("href", cssfile);
document.getElementsByTagName("head")[0].appendChild(loadcss);

Can I do that in the same <script> tag where I load the JS? or will that cause issues?

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1 Answer

  1. Editorial Team

    You’ll need to append the generated script element(s) to the page in some fashion.

    var head = document.getElementsByTagName('head')[0];
head.appendChild(ourJSFile);
head.appendChild(fileref);
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